- Obituary (1904 Hits)
- Obscurity (3086 Hits)
- Officium Triste (1463 Hits)
- Omission (1334 Hits)
- Omnium Gatherum (239 Hits)
- Onheil (953 Hits)
- Onkel Tom Angelripper (1003 Hits)
- Onslaught (1876 Hits)
- Oppressus (1615 Hits)
- Orae (1465 Hits)
- Orden Ogan (1567 Hits)
- Out For Blood (993 Hits)
- Outrage (JPN) (620 Hits)
- Overkill (1405 Hits)
- Ozzy Osbourne (1532 Hits)